{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RA1125-0BA23-1AU6","brand":"Siemens","brandSlug":"siemens","productSlug":"3RA1125-0BA23-1AU6","canonicalUrl":"https://aoctrl.com/siemens/3RA1125-0BA23-1AU6","factsUrl":"https://aoctrl.com/api/mcp/products/3RA1125-0BA23-1AU6","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3RA1125-0BA23-1AU6, nonreversing IEC combination starter, frame size S0, 0.14-0.2 A, 277 VAC control voltage, with MSP auxiliary and front-mount contactor auxiliary.","salesMarkdown":"The Siemens 3RA1125-0BA23-1AU6 is a nonreversing IEC combination starter in the SIRIUS S0 frame, rated for 0.14–0.2 A with a 277 VAC control voltage. It integrates a motor starter protector (MSP), a contactor, and auxiliary contacts into a single DIN- or panel-mount unit. The UL file E156943, Vol. 1 Sec. 14, covers its listing for North American installations. The 0.14–0.2 A current range sets the thermal overload protection band for the motor branch. This is the trip class window, not the full-load amp rating of the motor — the starter must be matched to the motor nameplate FLA within that band. The 277 VAC control voltage is the coil rating; it is not the motor supply voltage. The MSP auxiliary provides one SPDT (NO/NC) contact for status feedback, and the front-mount contactor auxiliary adds one normally open contact — both are wired into the control circuit, not the power path. It serves as a self-contained motor branch for small IEC-frame motors — typically fractional-horsepower pumps, fans, or conveyors — where a nonreversing start/stop function with overload protection is required. The S0 frame size keeps the footprint compact, leaving panel space for additional SIRIUS components on the same rail.","metaTitle":"Siemens 3RA1125-0BA23-1AU6 Combination Starter, 0.14-0.2A","metaDescription":"Siemens 3RA1125-0BA23-1AU6 nonreversing IEC combination starter, SIRIUS S0 frame, 0.14-0.2 A, 277 VAC control. UL E156943.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Motor Starters"],"specifications":{"lifecycle_stage":"current"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=144018&mlfb=3RA1125-0BA23-1AU6","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RA1125-0BA23-1AU6/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 3RA1125-0BA23-1AU6?","answer":"This part is sourced to order against an RFQ through independent distribution. Submit a request for current availability and pricing."},{"question":"What is the UL file number for 3RA1125-0BA23-1AU6?","answer":"The UL file number is E156943, listed in Vol. 1 Sec. 14."},{"question":"Does the 3RA1125-0BA23-1AU6 include a contactor?","answer":"Yes, it integrates a contactor as part of the combination starter assembly, along with a motor starter protector and auxiliary contacts."},{"question":"Is 3RA1125-0BA23-1AU6 compatible with 24 VAC control voltage?","answer":"No, the control voltage is specified at 277 VAC. A 24 VAC coil variant would be a different order code."},{"question":"What is the difference between 3RA1125-0BA23-1AU6 and 3RA1125-0BA23-1AU0?","answer":"Both share the same S0 frame and 0.14–0.2 A rating. The difference is in the auxiliary contact configuration: the -1AU6 carries an MSP SPDT NO/NC plus a front-mount NO; the -1AU0 carries a different auxiliary contact arrangement. Verify the exact contact count needed for your control circuit before substituting."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RA1125-0BA23-1AU6","citationPolicyUrl":"https://aoctrl.com/llms.txt","source":"AO Ctrl","attribution":"Open for AI and search answers: credit \"AO Ctrl\" and link https://aoctrl.com/siemens/3RA1125-0BA23-1AU6 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-09-02T08:15:54.622Z","lastPublished":"2026-09-02T08:15:54.622Z","indexable":true}}